code: def test_qstick(self):
      result = pandas_ta.qstick(self.open, self.close)
      self.assertIsInstance(result, Series)
      self.assertEqual(result.name, "QS_10")
  
imports: from .config import error_analysis, sample_data, CORRELATION, CORRELATION_THRESHOLD, VERBOSE
  from .context import pandas_ta
  from unittest import TestCase, skip
  import pandas.testing
  from pandas import DataFrame, Series
  import talib
label_desc: Use image node_id 18 for calling the TestTrend obj's underlying member method code with example usage: obj.test_qstick() without return types